ASTROSAT CZTI

Data Quality Report

Orbit 48189

Creation date: 2024-08-26T10:43:01.909627
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_037T05_9000006414_48189cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48189cztM0_level2_quad_clean.evt
Size (bytes)623,986,56072,590,400
Size595.1 MB 69.2 MB
Events in quadrant A7,135,923732,713
Events in quadrant B1,216,12846,941
Events in quadrant C3,012,088720,497
Events in quadrant D11,190,668211,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260410
B074430
C0142480
D0381750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68972283.305785%
B6898689799.985503%
C6898230.333430%
D6898529776.790374%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7262 6899 5 5 0.07% 0.07%
B 7262 6897 3 3 0.04% 0.04%
C 7263 6900 5 5 0.07% 0.07%
D 7262 6897 2517 2517 34.66% 36.49%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 4206008 26848.32 750 736 156.6
A 13 254 14156 85.68 750 736 156.6
A 13 248 12742 76.65 750 736 156.6
B 2 177 950666 77229.11 50 48 12.3
B 4 21 35189 2854.89 50 48 12.3
B 0 200 20793 1685.34 50 48 12.3
C 12 2 46946 264.28 738 742 174.8
C 12 250 31063 173.43 738 742 174.8
C 3 233 22437 124.09 738 742 174.8
D 8 129 9865832 161949.7 230 221 60.9
D 2 165 260098 4266.03 230 221 60.9
D 5 222 60120 983.28 230 221 60.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter